bond 26 2339 s rod mill for work index

  • PILGANGOORA LITHIUMCOMMINUTION TEST WORK

     · • Bond Rod Mill Work Index (RWI) • Bond Ball Work Index (BWI) This Feasibility Study Comminution test work built upon and refined the results from the Scoping Study and has provided the material for the Beneficiation phase of the ongoing metallurgical test 9/1/2015 8 26 11 AM

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  • Comparison of UCS to Bond Work Indices

    FIGURE 8 ROD MILL/BALL MILL WORK INDEX RATIO v. UNCONFINED COMPRESSIVE STRENGTH 100 200 300 400 UCS (MPa) 0 0.5 1 1.5 2 WiRM/WiBM (metric) Siddall et al (1996) identified the ratio of Bond rod mill Work Index and ball mill Work Index as being indicative of an ore s compentency. Figure 8 plots this ratio versus UCS no trend is apparent. Interpretation

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  • Sampling and analysis for feasibility studies and mineral

     · GRINDABILITY TESTS Bond Rod mill work Index • The rod mill work Index is also normally distributed with and average and median of 14.8kWh/t • It is common to observe difference between the ball and rod mill caused by variation in ore hardness • The test has been mainly used for the design of rod mill or primary ball mills. http

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  • EX-99.1SEC

     · Bond Ball Mill Work Index was determined to be 13.33 kWh/t Pennsylvania Abrasion test to determine the consumption of steel media. It was determined that the greywacke material will consume a lot more steel media than other rock types the lithological weight average was a value 0.082.

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  • Anaconda Mining Reports Metallurgical Testing Results for

     · The Composites fell in the range of 28.1 to 32.9 A x b values from the SMC tests considered to be hard to very hard (resistance to impact breakage) and with a Bond Ball Mill Work Index

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  • NI43-101 Technical ReportBlack Thor Black Label and

    NI43-101 Technical ReportBlack Thor Black Label and Big Daddy Chromite Deposits i National Instrument 43-101Technical Report Black Thor Black Label and Big Daddy chromite deposits

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  • Investigation into the applicability of Bond Work Index

     · The Bond Work Index (BWI or W i) is defined as the calculated specific energy (kW h/t) applied in reducing material of infinite particle size to 80 passing 100 μm . The higher the value for W i the more energy is required to grind a material in a ball mill .

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  • NI43-101 Technical ReportBlack Thor Black Label and

    NI43-101 Technical ReportBlack Thor Black Label and Big Daddy Chromite Deposits i National Instrument 43-101Technical Report Black Thor Black Label and Big Daddy chromite deposits

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  • MinProc CalcsMETALLURGICAL CALCULATIONS Pulp

    Work indexmeasure of grindability for the work to be done or done in grinding the circuit feed to the circuit product. Used to determine grinding circuits that are operating inefficiently. Work index is defined as power. Bond equation measures work done or to be

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  • Estimation of Grinding Time for Desired Particle Size

     · Magdalinovic N Trumic M Trumic G Magdalinovic S Trumic M (2012) Determination of the Bond work index on samples of non-standard size. Int J Miner Process 114–117 48–50. Google Scholar 13. Tavares LM De Carvalho RM Guerrero JC (2012) Simulating the Bond rod mill grindability test. Miner Eng 26 99–101

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  • GMSG GUIDELINE DETERMINING THE BOND EFFICIENCY

     · Bond Test WI s (kWh/t) Crushing 16.0 Rod Mill 14.5 Ball Mill 13.8 . Bond Standard Circuit Work Index kWh/t . W Total = 0.9 3.4 8.0 = 12.3 kWh/t = 14.1 kWh/t . Note 14.1 kWh/t is also the combined Cr-Rod-Ball test WI of the ore. This is also the expected Operating Wl of the Standard Circuit according to Bond. WISTD = Lab WICOMB = 14.1 kWh/t.

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  • Characterization and Comminution Studies of Low-Grade

     · Bond Work Index. A standard 12″ 12″ laboratory Bond ball mill was used to conduct the work-index experiments. About 50 kg of each of the BHQ and BHJ samples was prepared in −3.35 mm size by a jaw crusher followed by a roll crusher. Size analysis results for the crushed products of the BHQ and BHJ samples are shown in Fig. 1.

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  • Bond Work Index Formula-Equation911 Metallurgist

    Basic Equations
  • Anaconda Mining Reports Metallurgical Testing Results for

     · The Composites fell in the range of 28.1 to 32.9 A x b values from the SMC tests considered to be hard to very hard (resistance to impact breakage) and with a Bond Ball Mill Work Index

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  • FAQ NCP International

    The test work will entail industry standard tests such as the Bond Rod Mill Work Index Bond Ball Mill Work Index JK/DWi tests and then some specific batch mill tests. The results of the test work will then be used to determine the parameters required for Simulation.

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  • A New Approach to the Calculation of Work Index and

     · The mill power is = 22.5 Watts calculated by (6). Fi- P nally the product is wet screened to find the size d80. 2.4. Rod Mill Semi Continuous Process The same mill is used for the semi continuous grinding tests which is similar to the Bond test but with the exist- ing mill of known power. After time the mill

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  • Tietto Minerals Ltd test-work demonstrates low-cost

     · Bond Rod Mill Work Index. The average results for the Bond Rod Mill Work Index which measures the resistance of the ore to grinding to a coarse product size are 13.2 kilowatts per tonne for

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  • METALLURGICAL TEST RESULTS SELENGE IRON ORE

     · BWi-Bond Ball Mill Work Index (kWh/t) 19.4 19.9 5 Notes 1. The UCS results indicated that the samples range from strong to very strong. 2. The Bond CWi results indicated the crushability of the samples is medium. 3. The SMC results indicated that grinding of the samples by SAG milling of the samples is hard. 4. The Bond Ai results indicated

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  • Comparison between bond crushing energy and fracture

     · Generally there are three Bond indices ball rod and crushability. The Bond ball and rod indices are determined using standard ball and rod mill respectively and are suitable for grinding. The Bond crushability index which is estimated using a standard impact crushability test is suitable for crushing21. Because the jaw crusher was

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  • THE EFFECT OF BALL MILL OPERATING PARAMETERS ON

     · Bond developed the well known Bond work index which is an indicator of a materials resistance to crushing and Bond s theory was more suited to the particle size ranges involved in conventional ball and rod mill grinding (5 to 250 mm). Rittinger s law

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  • CREATIVE AND SIMPLER HPGR CIRCUITS MAY INCREASE

     · hard gold ores with average Bond ball mill work indices (BWi) of 15.1 and 16.6 kWh/t Bond rod mill work indices (RWi) of 22.8 and 24.2 kWh/t and JK Axb values of 27.9 and 25.5. The circuit is comprised of five 746 kW cone crushers four 2.4 m diameter (D) x

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  • Comparison of UCS to Bond Work Indices

    FIGURE 8 ROD MILL/BALL MILL WORK INDEX RATIO v. UNCONFINED COMPRESSIVE STRENGTH 100 200 300 400 UCS (MPa) 0 0.5 1 1.5 2 WiRM/WiBM (metric) Siddall et al (1996) identified the ratio of Bond rod mill Work Index and ball mill Work Index as being indicative of an ore s compentency. Figure 8 plots this ratio versus UCS no trend is apparent

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  • U.S. Midwest Domestic Hot-Rolled Coil Steel (CRU) Index

    U.S. MIDWEST DOMESTIC HOT-ROLLED COIL STEEL (CRU) INDEXOVERVIEW. Protect margins hedge physical positions offer floating and fixed price physical transactions and mitigate price risk more effectively with HRC Steel futures and options. The HRC Steel contract is settled against industry-approved price indices disseminated by a respected

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  • Table of Bond Work Index by Minerals911 Metallurgist

     · Source 1 Table of materials reported by Fred Bond Source 2 Outokumpu The science of comminution Source 3 Equipment and pipelines Source 4 Tenova Bateman mills (AG/SAG Rod Ball Mills) Source 5 Doering international cylpebs Source 6 SME handbook of mineral processing N.L Weiss Editor NY 1985. Bond Work Index Tester

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  • Characterization and Comminution Studies of Low-Grade

     · Bond Work Index. A standard 12″ 12″ laboratory Bond ball mill was used to conduct the work-index experiments. About 50 kg of each of the BHQ and BHJ samples was prepared in −3.35 mm size by a jaw crusher followed by a roll crusher. Size analysis results for the crushed products of the BHQ and BHJ samples are shown in Fig. 1.

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  • MinProc CalcsMETALLURGICAL CALCULATIONS Pulp

    Work indexmeasure of grindability for the work to be done or done in grinding the circuit feed to the circuit product. Used to determine grinding circuits that are operating inefficiently. Work index is defined as power. Bond equation measures work done or to be

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  • Bond Efficiency-GMG-ICE-v1-r04 Determining

     · WiBM Bond Ball Mill Test Work Index (kWh/t) Wic Bond Impact Crushing Test Work Index (kWh/t) WioACT Actual Operating Bond Work Index determined from measurements on the circuit (kWh/t) WiRM Bond Rod Mill Test Work Index (kWh/t) WiSTD Standard Circuit Bond Work Index (expected or designed) used for circuit design. Specific energy requirement at the drive pinions. 3.KEYWORDS Work Index Work Index Efficiency Bond Work Index

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  • Sampling and analysis for feasibility studies and mineral

     · GRINDABILITY TESTS Bond Rod mill work Index • The rod mill work Index is also normally distributed with and average and median of 14.8kWh/t • It is common to observe difference between the ball and rod mill caused by variation in ore hardness • The test has been mainly used for the design of rod mill or primary ball mills. http

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  • Rittingeran overview ScienceDirect Topics

    The Bond work index (Bond 1960) is based on Bond s law which states that the energy consumed is proportional to the 1.5 power of particle size rather than the square of Rittinger s law. Accordingly the energy consumed in reducing the particle size from x F to

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  • Investigation into the applicability of Bond Work Index

     · The particle size range of the biomass particles (prior to densification) was obtained using the British standard BS EN 16126 2012 . 2 litres of boiling deionised water was poured over 300 ± 1 g of each pellet sample and then soaked for 24 h. The samples were then dried at 35–60 °C until they reached 5–15 moisture content.The samples were then split into two portions 150 g was used to

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  • Power-based modelling of single-stage AG and SAG mill

    where WiC is the Bond crushing work index unitless P80 is the SAG hydrocyclone overflow 80 passing size µm F80 is the milling circuit feed 80 passing size µm WiRM is the Bond rod mill work index unitless WiBM is the Bond ball mill work index unitless EF4 and EF5 are the Rowland efficiency factors for oversized feed and fine grinding.

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